OM5232 Datasheet, PDF (1/11 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontroller

Philips Semiconductors
CMOS single-chip 8-bit microcontroller
Product specification
OM5232
DESCRIPTION
The OM5232 Single-Chip 8-Bit Microcontroller is manufactured in an
advanced CMOS process and is a derivative of the 80C51
microcontroller family. The OM5232 has the same instruction set as
the 80C51.
See also:
– OM5202 — ROMless version
– OM5234 — 16K bytes mask programmable ROM
– OM5238 — 32K bytes mask programmable ROM
This device provides architectural enhancements that make it
applicable in a variety of applications for general control systems.
The OM5232 contains a non-volatile 8k × 8 read-only program
memory, a volatile 256 × 8 read/write data memory, four 8-bit I/O
ports, two 16-bit timer/event counters (identical to the timers of the
80C51), a multi-source, two-priority-level, nested interrupt structure,
UART and on-chip oscillator and timing circuits. For systems that
require extra capability, the OM5232 can be expanded using
standard TTL compatible memories and logic.
The device also functions as an arithmetic processor having
facilities for both binary and BCD arithmetic plus bit-handling
capabilities. The instruction set consists of over 100 instructions: 49
one-byte, 45 two-byte and 17 three-byte. With a 16MHz crystal, 58%
of the instructions are executed in 0.75µs and 40% in 1.5µs. Multiply
and divide instructions require 3µs.
FEATURES
• 80C51 central processing unit
• 8k × 8 ROM, expandable externally to 64k bytes
• 256 × 8 RAM, expandable externally to 64k bytes
• Two standard 16-bit timer/counters
• Four 8-bit I/O ports
• Two open drain I/O’s (P1.6, P1.7)
• Full-duplex UART facilities
• Power control modes
– Idle mode
– Power-down mode
• ROM code protection
• Extended frequency range: 1.2 to 16 MHz
• Operating ambient temperature range: 0 to +70°C
PIN CONFIGURATIONS
P1.0 1
P1.1 2
P1.2 3
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RST 9
RxD/P3.0 10
TxD/P3.1 11
INT0/P3.2 12
INT1/P3.3 13
T0/P3.4 14
T1/P3.5 15
WR/P3.6 16
RD/P3.7 17
XTAL2 18
XTAL1 19
V_SS ²⁰
44
40 _VDD
39 P0.0/AD0
38 P0.1/AD1
37 P0.2/AD2
36 P0.3/AD3
35 P0.4/AD4
34 P0.5/AD5
33 P0.6/AD6
32 P0.7/AD7
DIP
31 ^EA
30 ALE
29 PSEN
28 P2.7/A15
27 P2.6/A14
26 P2.5/A13
25 P2.4/A12
24 P2.3/A11
23 P2.2/A10
22 P2.1/A9
21 P2.0/A8
34
1
33
QFP
(SOT307–2)
11
23
12
22
SEE PAGE 2 FOR QFP PIN FUNCTIONS.
PART NUMBER SELECTION
PHILIPS PART
ORDER NUMBER
PART MARKING
PACKAGE NUMBER
OM5232/FBP/xxx ¹⁾
SOT129
OM5232/FBB/xxx ¹⁾
SOT307–2
NOTE:
1. xxx denotes the ROM code number.
TEMPERATURE RANGE °C,
PACKAGE
0 to +70, Plastic Dual In–line Package, 40 leads
0 to +70, Plastic Quad Flat Pack, 44 leads
FREQUENCY
MHz
1.2 to 16
1.2 to 16
EQUIVALENT TYPES
Details are as specified by the data sheet for the equivalent type:
OM5202 = P80C652 without I²C function.
OM5232 = P83C652 without I²C function.
OM5234 = P83C654 without I²C function.
OM5238 = P83C528 without I²C function.
December 1994
1